>>1993893Reminds me of the Lego monorail system, which I guess belongs in this thread as an unusual toy train system. Nobody else used a single-sided horizontal gear and flat road surface, did they?
I can't understand the logic behind this on real trains though, and I've seen it too on the Twin Cities light rail (Siemens S70, I think?) you've put the part that's most likely to fail in between two long, half-supported frames so reaching it is a hassle, and in a head-on collision it's a nice solid lump of metal to crush your passengers against.
